I'm trying to think of a proper ending to give this one. I'm thinking that in the end, the demideity's home universe would give implicit signals to the Foundation that they should keep him on Earth (because he managed to royally screw up something over there, and they needed a convenient place to dump him so he can't screw up anything else) but I can't seem to make that work. Also, the interviews are kind of lacking something for me, although I'm not sure what to add to it.
Ideas to rectify both problems would be appreciated.

Oh and in case the callous use of anomalous items bug you, my headcanon for it is that it's set in the distant future (or somewhere in the second quarter of the Rat's Nest canon timeline, whichever works for you) where the Foundation has finally reached that point where they are overstretching themselves on every front to keep the anomalies contained, and is now having trouble keeping their pile of anomalies from tumbling down and destroying the entire world - thus forcing them to make some concessions to save their dwindling resources.

The containment procedures seem pretty elaborate for something that was downgraded from Keter to Euclid. There's also a fair bit of "fluff" text that can be trimmed out so the instructions are clearer and less bogged down by commonsense stuff, like:

To maintain effective secondary form of containment

To maintain effective containment of SCP-4741

are not to be taken from its vault for any reason other than

To fulfill the conditions of Document 4741-Z and thus prevent SCP-4741 from moving out of Site 4741's boundaries

As well as overly wordy phrases that can be shortened, such as "No personnel, excepting those who had been granted clearance from the Site Director, are allowed to pass through any checkpoint that exits Area 3 into SCP-4741's location." being written as "Passage through checkpoints exiting Area 3 into SCP-XXXX's location requires clearance granted by the Site Director."

Also general things like making sure you put a line space between paragraphs so the piece doesn't look sloppy, not capitalizing categories like "object class" when not used as a bolded heading, using "fewer" for things that can be counted and "less" for things that can't, writing out the numbers less than 10 for things that aren't measured with specific units, and not using flowery language like "hailing from" in the official documentation. Also, why go immediately to SCP-4741-2 instead of SCP-4741-1? And so on.

Overall… I can't say I'm personally that excited about this, to be honest. Not only are there a lot of small issues that distract me from the read and make me pretty skeptical (300 meters is 984.252 feet, which is taller than a 90-story building? Plus on top of that all the space needed to apparently keep this thing contained, even though people can probably see it for miles?), the core concept of a powerful winged humanoid that has extra powers on top of that is already difficult to work with. The fact that it's on Earth for sightseeing but only mentions anomalous stuff and also has knowledge of the anomalous stuff seems both overly convenient and a little contrived, almost just for the sake of having the references in the interviews (which are also pretty unnecessarily dense and the speaking style starts to grate on a reader after several paragraphs of dialogue in). I personally felt like the rapid-aging field isn't necessary and can be removed. Ditto for the "if in the event of [x], change the object class." It's got a crazy amount of resources dedicated to it, for a crazy large containment setup. Just keep the thing at Keter.

I don't know about this. It feels like a small nugget of something workable, but it's buried under excess content, most of which is either confusing or I've seen before in drafts that got deleted off the mainsite. Typically I'd mention getting the concept polished up to be less cliche in the Ideas and Brainstorming forum, but I personally am unsure about how to improve this. There is a lot of material to digest here, and most of it is difficult to pick through because of the kind of convoluted way the interviews are presented. Maybe ask some of our experienced Keter writers and see what they think. Anborough is a solid contact for a consultation, I believe.